whorl
helix; screw; spiral; spire; volution
【化】 helix
【医】 coil; coiling; helico-; screw; spiral; spiro-; tirefond
a; an; each; one; per; same; single; whole; wholehearted
【医】 mon-; mono-; uni-
annulus; hem in; link; loop; ring; surround
【计】 ring up; toroid
【化】 ring
【医】 annuli; anulus; band; circle; circulus; cycle; cyclo-; gyro-; loop; orb
ring; verge